Journal-bearing.



No. 718,141. PATENTED 11111.13, 1.903.

P. T. J. MONSON 810.11. SMITH.

' JOURNAL BEARING.

' AAAAAAAAAAAAAAAAA PR. 2 1 1 9 0 2.

OOOOOOO L.

' WITNESSES INVENTOR. s

U V W'gAT i/VEXS set forth in the drawings,

PHILIP 'r. J.

MONSON AND OLIVER H. SMITH, OF

PATE T Orrics.

SPRINGFIELD, OHIO.

JOURNAL-BEARING.

SPECIFICATION forming .part 01:

Letters Patent No.718,14= 1, dated January 13, 1903.

Application filed April 21. 1902. Serial lla- 103.933. (No mod l.)

To all whom it may concern.-

Be it known that we, PHILIP T. J. MONSON and OLIVER H. SMITH, citizens of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in J ourual- Bearings, of which the following is a specification.

Our invention relates to journal-bearings, and more especially to journal-bearings consisting of two parts of such form that when cast together they will have hardened bearing-surfaces with proper clearance for operating one within the other. The outer part may constitute the hub of a pulley, spider, disk, a stationary box, or other device, and the inner part may be cored out to form an opening for an axle, bolt, trunnion, shaft, or other support, or the support may be first placed within the outer part of the bearing and the metal to form the inner part then poured, the" metal shrinking rigidly on the support and forming on its outer surface a hardened bearing-surface against the outer' this outer part being of part of the hearing, such shape that the longitudinal shrinkage of the inner part will compensate for itsdiametrical shrinkage and give a proper clearance between the parts. There are 5 many kinds of machines,-- implements, and bther driving mechanisms in which it is desirable to form hearings in this way. The inner part may be cast to a rough support,- thereby sav:

ing the turning and finishing .of ajournal on and this construction, by reason holds the parts against displacement without the 'use of .collarsor other devices. I I Our inventionconsists of the constructions and combinations hereinafter described, and

in which--- Figure 1 is a sectional view'of our device upon a shaft. Fig. 2 is a-sectional view of same, showing a modified form of the bearing surfaces. Fig. 3 is an end view, and Figs. 4. and 5 show the-chill used in casting-the outer part of the bearing.

' In the drawings, a. represents the outer part or box of the hearing, which is first castin a sand mold inthe usual way, the interior, howthe support, of -th'e shape of the two parts,

' ever, being formed to the shape desired by a may be of any shape,

the one shown in Figs. 4 shape as to form the inas shown in Fig. 1.

metal core or chill, and 5 being of such terior of the outer part, This metal core part I) being rigidly attached to the shaft b, and the part b is bored to lit and is slipped on said shaft until it abuts on the part b, when is formed in two parts, the

the core is placed in the mold and the casting made. This core forms a chill which causes a hardened bearing-surface on the interior of the outer part or bearing. After the casting is made the two parts of the core may be driven out'of the respective ends of the casting. Having produced the outer part in the man-' ner described, the support, which may be a shaft d to which it is desired to attach the bearing, is placed within the outer part and the open ends around the support are closed, leaving an open port through which the metal is poured to form the inner part c of the bearing. The metal .will conform to the inner surface of the outer bearing, and being chilled by it, will also produce a hardened bearingsurface on the inner part. The lengthwise or longitudinal shrinkage will be toward the inclination of the outer part c, which will compensate for the diametrical shrinkage and give a proper clearance between the bearingsurfaces. The diametrical shrinkage willattach the inner casting rigidly to the shaft; but, if desired, the support need not be cast in the hearing. The usual sand or other core may be used to produce an opening through the inner casting and afterward the bearing can be attached to the support.

While in Fig. 1 we have shown the bearing parts inclined in straight lines toward the longitudinal center of the bearing, the bearings so that the longitudinal shrinkage will compensate for the diametrical shrinkage to give proper clearance, and in I Fig. 2 we have'shown the-outer part with a raised portion 0 the inner part conforming with it. The oil-holes a and a may be placed as desired, the preferable-location depending on whether the parts are used in a vertical position; It may be further statedwe-have found by actual experience that the centrifugal force,'by reason of the inclination given to thebearing-surface from the longitudinal center, as described, tends to or longitudinal from all foreign substances,-

making it, in fact, a self-cleaning 'pecially desirableuihen used in dusty places.

Having thus described our invention, we claim 1. The method of making a two-part bearing by first preparing one of said parts with its bearing-surface inclined toward its longitudinal center and then casting the other part against the bearing-surface of said firstprepared part, substantially as described.

2. The method of making a two-part hearing with corresponding raisedand depressed portions on their bearing-surfaces by first preparing one part and then casting the other part against the bearing-surface of said firstprepared part, substantially as described.

3. The method of making a two-parthearing with corresponding raised and depressed portions on their bearing-surfaces and combining said bearing with a shaft or support by first preparing one of said arts and then casting the other part again t the bearingsurface of said first-prepared part, one of said parts being cast to said shaft or support, sub- 25 stantially as described.

4. The combination with a shaft or support, of a two -part bearing comprising an integrally-formed outer casting and an inner casting on said shaft or support, one of said parts havinga raised portion thereon. and the other a corresponding depression, substantially as described.

5. The combination with a shaft orsupport, of a two-part bearing comprising an outer casting and an integrally-formed inner casting on said shaft or support, one of said parts havinga raised portion thereon and the other a corresponding depression, substantially as specified. b

In testimony whereof we have hereunto'set our hands this 17th. day of April, A. D. 1902.

PHILIP T. J. MoNsoN. OLIVER H. SMITH.

"Witnesses: I

F. LLEWELLYN WALKER, CHAS. I. WELOH. 

